(1) Each of the following substances is a controlled drug :
(a) a substance mentioned in schedule 1;
(b) an associated drug;
(c) a related drug.
(2) An associated drug is any of the following:
(a) an active principle of a substance mentioned in schedule 1;
(b) a preparation or admixture of a substance mentioned in schedule 1;
(c) a salt of—
(i) a substance mentioned in schedule 1; or
(ii) an active principle of a substance mentioned in schedule 1.
(3) A related drug is any of the following:
(a) a stereoisomer of a substance mentioned in schedule 1;
(b) a positional isomer of a substance mentioned in schedule 1 or paragraph (a);
(c) an ether of a substance mentioned in schedule 1 or paragraph (a) or (b);
(d) an ester of a substance mentioned in schedule 1 or paragraph (a), (b) or (c);
(e) a structural modification of a substance mentioned in schedule 1 or paragraph (a), (b), (c) or (d) obtained in any of the following ways:
(i) by the replacement of 1 or 2 carbocyclic or heterocyclic ring structures with different carbocyclic or heterocyclic ring structures;
(ii) by the addition of hydrogen atoms to 1 or more unsaturated bonds;
(iii) by the conversion of a carboxyl or an ester group into an amide group;
(iv) by the addition of, or the replacement of a hydrogen atom with, 1 or more of the following defined functional groups:
• an alkoxy, cyclic diether, acyl, acyloxy, mono-alkyl amino or dialkyl amino group with 6 or less carbon atoms in any alkyl residue;
• an alkyl, alkenyl or alkynl group with 6 or less carbon atoms in the group and if the group is attached to oxygen (for example, forming an ester or an ether group), nitrogen, sulphur or carbon;
• a halogen, hydroxy, nitro or amino group.
Note An example is part of the regulation, is not exhaustive and may extend, but does not limit, the meaning of the provision in which it appears (see Legislation Act, s 126 and s 132).